In the first video of this 10 part series on Asterisk, I explain how to install Asterisk. Asterisk is an open source VOIP communications platform, considered a complete software based IP PBX. And it's free! Due to Youtube's small video size, some of command line stuff is hard to see. You can view a 640X480 video on my website: www.HotButteredIT.com. They are currently free, but I'll have to keep an eye out on the bandwidth usage. Enjoy!